.logo {
  height: 32px;
  margin: 16px;
  background: rgba(255, 255, 255, 0.3);
}
.site-layout .site-layout-background {
  background: #fff;
}
.nav {
  width: 100%;
  height: 42px;
  border-top: 1px solid #1890ff;
  background-color: #fff;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
}
.nav .left {
  width: 150px;
  height: 42px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  position: relative;
}
.nav .left::after {
  content: " ";
  position: absolute;
  width: 0;
  height: 0;
  border: 15px solid;
  border-color: #fff transparent transparent;
  left: 50%;
  transform: translate(-50%);
  top: calc(100% - 1px);
}
.nav .right {
  line-height: 42px;
}
.welcome {
  width: 100%;
  height: 400px;
  line-height: 400px;
  text-align: center;
  font-size: 20px;
}
.carousel {
  width: 400px;
}
.carousel h3 {
  height: 160px;
  color: #fff;
  line-height: 160px;
  text-align: center;
  background: #364d79;
}
/* tile uploaded pictures */
.avatar-item {
  margin-right: 24px;
}
[class*='-col-rtl'] .avatar-item {
  margin-right: 0;
  margin-left: 24px;
}
